Logic Riddles

Question: You are trapped in a room. There are two doors. If you go in one door, a dragon is going to breath fire on you. If you go into the other door, there is a room made of magnifying glass. And the sun is reflecting off of it and will burn you. How do you escape?

Question: A man has 3 children and half of them are girls, how is this possible?

Question: Take your time do not fear Sadly I am never clear My answer stares you in the face Read me over and over just incase My answer will cause you pain But a smile you will gain Today I am like a July evening dream To find my answer you may need a team What am I

Question: What does it mean when you're reading a fortune?

Question: You have found a mutant algae that doubles in size every hour. It takes 18 hours for one algae plant to take up half of a certain lake.

How long would it take for two of these plants to take up half of the same lake?